Food Packaging Technology: Materials, Barrier Properties and Specifications

Categories: Food Technology, FSMS
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About Course

Most packaging failures trace back to one property that was not specified, not checked or not delivered. A lid that lifts at the corner, a pouch that lets dried fruit go hard before its date, a case that folds at the bottom of a chilled pallet. Pull the specification and it often says ’peelable seal’, ’food grade’ or ’strong’, with no number, no method and no tolerance. This course teaches you to choose the material and write the line that would have stopped it.

After 12 hours you will be able to:

  • Shortlist paper and board, plastics, metal and glass on oxygen, water vapour and light barrier data, then confirm shelf life by a storage trial on the product in its pack
  • Read OTR and WVTR results with their test conditions (ASTM D3985, ASTM F1249, ISO 15105, ISO 15106) and tell when two data sheets cannot be compared
  • Read a laminate structure from outside to inside and talk to a converter about sealant, cure release, retained solvent and limitations of use
  • Write a packaging specification with a method, conditions, limit and frequency on every line, to BRCGS Food Safety Issue 9, BRCGS Packaging Materials Issue 7 and ISO 22002-4:2025

Who it is for. New packaging technologists, buyers, QA and QC staff, NPD staff and converter sales staff. It is a foundation course: no packaging background is needed.

No site to practise on? Every activity runs on Mzansi Pack, a fictional Gauteng converter built from real audit patterns. The packaging specification builder loads the case, flags every line that cannot be measured and exports the workbook you submit.

What R1 950 buys. 34 lessons in 7 modules, self-paced online, with 7 knowledge checks, 7 games, the specification builder, a workshop assignment marked within minutes and a proctored final assessment. Pass mark 70 percent, three attempts each, feedback after every failed attempt. Weigh the price against one wrong line: a day of lidded meals written off, a pallet of cases sent back by a distribution centre, a shelf life cut short by a thinner film nobody trialled.

Is it accredited? It is a non-credit-bearing short course. You receive a QR-verified certificate your employer can use in its competence records and an auditor can check online. For a team, buy several places in one order or ask for a team quote and pay by invoice.

What Will You Learn?

  • Shortlist materials on oxygen, water vapour and light barrier data, then confirm shelf life by storage trials on the product in its pack
  • Write a packaging specification with measurable limits
  • Read a laminate structure and ask a converter for OTR and WVTR with test conditions, cure release and limitations of use

Course Content

Module 1: What packaging must do: protect, preserve, inform, sell
The four jobs of a food pack, the levels of packaging, how a pack holds the conditions that keep food safe and sound, who owns the words on it, and a first map of the four material families.

  • The four jobs of a pack, and who pays when one fails
  • Protect: keeping the outside world out
  • Preserve: the pack holds the conditions
  • Inform, sell and a first map of the materials
  • Module 1 knowledge check
  • Which job failed?

Module 2: Paper and board, including corrugated
How paper and board are built from fibre, why they need coatings for barrier, what can migrate from recycled board, how corrugated board carries a stack, and how to test and specify board for a cold chain.

Module 3: Plastics and flexible laminates
The polymers a food buyer meets, PET, rPET and CPET in trays, how films are made and combined, what adhesives and coatings add, how to read a laminate structure, and how resin codes and recycling work in South Africa.

Module 4: Metal cans, closures and foil
Tinplate, chromium coated steel and aluminium. How cans and ends are made. What internal coatings do and what the EU bisphenol rules now require. Aluminium foil, pinholes and thickness. Metal closures.

Module 5: Glass containers and closures
What container glass is made of, what its colour does for light, how bottles and jars are formed and where defects come from, how a food line manages glass breakage, and how to specify a glass container and its closure.

Module 6: Barrier properties, product and pack interaction, and shelf life
What permeation is and how it is measured, typical published barrier ranges and how to shortlist on them, what the product does to the pack through scalping, light and corrosion, and how to confirm shelf life by storage trials on the product in its pack.

Module 7: Packaging specifications that a supplier can be held to
What BRCGS Food Safety Issue 9, BRCGS Packaging Materials Issue 7 and ISO 22002-4:2025 expect of packaging specifications, the sections of a complete specification, how to write limits that can be measured, and how to agree, test and review a specification with a supplier.

Assignment, final assessment and course review
Your practical assignment on your own site or on Mzansi Pack, then the final assessment. Your certificate is released when every assessment is passed and your course review is submitted.

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